摘要
利用侧边抛磨光纤(SPF)传感器抛磨区对外界折射率敏感的特性,研究了混合有偶氮苯(AZO)和手征材料(ZLI811)的液晶混合物薄膜在紫外光照射下产生的光折变效应。将液晶、AZO和ZLI811等3种材料的混合物涂覆在经过标定的SPF传感器的抛磨区上,制备成混合物薄膜。用UV光照射光敏薄膜导致SPF中传输光功率改变。实验表明:混合物薄膜在UV光照射下有光敏特性,会产生折射率变化,其折射率从1.474变到1.470。这表明此光敏薄膜材料是负光折变材料。这种光敏薄膜材料可应用于制作新型全光纤光控器件和传感器。
Using the property of side polished fiber（SPF） sensor＇s polishing area sensitive to external refractive index,the photorefractive effect of liquid crystal hybrid film mixed with Azobenzene（AZO） and ZLI811 was studied under UV light pumping.The mixture composed of liquid crystal,AZO,and ZLI811 was coated on the polishing area after the SPF was calibrated,and the hybrid film was prepared.The transmission optical power in the SPF changes when photosensitive film is UV irradiated.Experiment shows that the photosensitive film is a negative photorefractive material,and the refractive index changes from 1.474 to 1.470 under the UV light pumping.This photosensitive film material can be used to create a new all-fiber optical-controllable components and sensors.
出处
《应用光学》
CAS
CSCD
北大核心
2011年第1期106-110,共5页
Journal of Applied Optics
基金
国家自然科学基金(60877044
10776009)
关键词
侧边抛磨光纤
光折变效应
光敏薄膜
光泵浦
side polished fiber
photorefractive effect
photosensitive film
optical pumping
